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9 guides

System Design

Interview-ready designs with clear trade-offs.

System Design Jul 18, 2026 · 16 min Designing TikTok : A System Design Guide for SDE3 & Staff Software Engineer Interviews A step-by-step walkthrough of how to design a short-video platform like TikTok, from video upload and processing to the recommendation… Read →

System Design Jul 8, 2026 · 9 min How to Design a URL Shortener Like TinyURL — Step-by-Step for System Design Interviews A few weeks ago, a friend of mine — three years into his backend career, preparing hard for an SDE… Read →

System Design Jun 27, 2026 · 18 min Payment Processing Systems: A Complete Architect’s Guide Payment Processing Systems: From a user clicking “Buy” to funds settling in a merchant’s account — a deep dive into… Read →

System Design Nov 23, 2025 · 7 min What Is an IP Address? Your Essential Guide for System Design Interviews An IP address (Internet Protocol Address) is a unique numerical identifier assigned to every device connected to a network. It… Read →

System Design Nov 9, 2025 · 5 min OSI Model Explained: The 7 Layers of Network Communication The OSI (Open Systems Interconnection) Model is a conceptual framework, standardized by ISO, that defines how two systems communicate through… Read →

System Design Oct 12, 2025 · 4 min TCP/IP Protocol Stack in System Design: The 4-Layer Foundation of Network Communication In modern system design, applications are no longer confined to a single server.Microservices, distributed databases, cloud APIs, and millions of… Read →

System Design Oct 5, 2025 · 5 min Reliability in System Design: 4 Metrics for Building Systems That Never Let You Down When we talk about great systems whether it’s Netflix streaming billions of hours of video, or Stripe processing millions of… Read →

System Design Oct 1, 2025 · 10 min Availability in System Design: A Complete Guide Introduction – Why Availability in System Design Matters Imagine your favourite shopping site goes down during a big sale or… Read →

System Design Sep 28, 2025 · 9 min Scaling in System Design: Vertical vs. Horizontal Explained Scaling in System Design: Scaling refers to a system’s ability to handle increased load (more requests, more users, more data)… Read →